IJIEEE Journal

Paper Title - Design of Digital Controller For Active Power Filter Based on P-Q Theory

Abstract
In AC electrical systems, harmonic distortion is a common disturbance. This harmonic disturbances can cause the
waveform of voltage or current distorted periodically. Active power filter (APF) is one method to repair the distorted
waveform by injecting anti-harmonic waveform. This paper describes the use of a digital controller to control the Active power
filter in order to obtain anti-harmonic waveforms to eliminate harmonic waveform. Digital controller programming is done
using MATLAB® software. p-q Theory is used to separate fundamental components with the harmonic components so that
anti-harmonic waveforms can be calculated. Based on the implementation results can be seen that the control system that used
is able to generate of anti-harmonic waveform to compensate distorted waveform so that the results are already in sinusoidal
conditions.
Index Terms— Harmonic, p-q Thory, Active Power Filter, Reference Current.